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We are thrilled to announce that the Cybi Coastal Marathon has won 1st place in the Best Marathons category of the Challenge Awards presented by Runners World and powered by Let’s Do This. The awards aims to recognise the best challenge events, organisation, charities, communities and individuals over the 2018/19 season.

The 2020 Race

The Challenge Award winning​ Cybi Coastal Marathon will take place on Saturday, 1st August 2020. Circumnavigating Ynys Cybi on the Welsh national coastal footpath and Anglesey coastal path, the Cybi Coastal is fast establishing itself as one of the most scenic marathons in the UK. With a limit of 200 runners, we hope this event will attract participants from across the UK, Europe and the USA who will come to compete alongside local runners on this fantastic route. Due to the nature of this event, we have set a minimum age limit of 18 years of age on the day of the race.

Event sign up goes live at 00:01hrs on the 1st December 2019.

The Route


The Cybi Coastal will be partially way-marked and will follow the paths, tracks, beaches and coastline of the Welsh national/Anglesey Coastal Path. The entire route passes through magnificent coastline scenery with fine views of wide bays, sandy beaches, dramatic cliffs, the famous South Stack lighthouse and the summit of Holyhead Mountain.

Participants will be chip timed by our timing partner and we will provide split times and finish times for all participants after the event.

The route can be viewed here A GPX version of the route can be downloaded here


Starting in the port town of Holyhead this race takes you on a variety of surfaces. Easy going paved paths, a small amount of road sections, sandy beaches, fields and single tracks. Tricky cliff tops and with a few good hill climbs and to top it all off a short sharp climb to the top of Holyhead Mountain and back down to sea level. Depending on the weather, this course can be very muddy and trail shoes are highly recommended. Minimum kit requirements may be implemented according to weather conditions.

Event Info

These are PROVISIONAL TIMES, you will receive your final information in the weeks before the event.

Saturday, 1st AugustRegistration opens 07:30hrs – 09:30hrs.

The event HQ is at the Holyhead Lifeboat station where the marathon starts and finishes. Here you can register on Friday 31st July between 19:00 and 21:00 hours.

Race briefing at 09:35hrs.

The race starts at 10:00hrs.

Entrance fee is £30. This gets you entry to the full marathon, Timed course, Branded Cybi Coastal technical t-shirt, Finishers medal, 5 water stations along the course, Partially way-marked course.

Follow us on Twitter @CoastalCybi

See our Facebook Page for further info.

Contact Us

Full Race info

Full Race Instructions


Previous Event Results




Our Chosen Charity

Cybi Coastal is run as a not for profit event with all finances raised after costs going to the RNLI Holyhead and Trearddur Bay lifeboat stations.
In our first 2 years of organising the Cybi Coastal Marathon we are proud to have been able to donate £7200.

Holyhead Lifeboat Facebook page

Trearddur Bay Lifeboat Facebook page

Eco Information

For the last 2 events we have been as green as we could be, using fully compostable/biodegradable cups at our water stations and refraining from using any single use plastics as far as possible.

We are trying to improve on this for the 2020 event. As such we are going disposable cup free at the CPs.
We are asking that all runners bring their own water bottles or collapsible cups for the event.
We will have a limited amount of collapsible reusable running cups available to purchase on the day at registration.